Apple to Use 'Stepped Battery' Technology from LG Chem for iWatch
Apple will use lithium-ion batteries supplied by Samsung SDI, Tianjin Lishen Battery, and LG Chem for its upcoming iWatch, reports The Korea Herald. LG Chem in particular produces stepped batteries that are said to offer both greater longevity and greater flexibility, as they can be made in a variety of shapes.

"Apple will utilize LG Chem's stepped battery since it offers better longevity than others and can be applied for different shapes," a source said, declining to be identified.
A stepped battery is similar to a traditional lithium-ion battery but it also includes an extra ridge or "step" on the back that increases the battery's capacity. According to LG Chem, the design boosts capacity by 16 percent, which results in three extra hours of battery life in the LG G2 smart phone. Apple would, of course, need to use a much smaller battery, but such a design could help it eke out extra longevity.
Battery life is said to be one of Apple's major iWatch developmental issues, with a report from last year suggesting the company was seeing just one to two days of battery life in prototype devices. Another January report indicated Apple is still having trouble reaching its target goal of four to five days of battery life.
Along with its efforts to increase battery life, Apple has also been experimenting with a number of effortless charging methods that could make it easier for consumers to charge their devices on a frequent basis. Inductive charging, for example, would allow the iWatch to be charged wirelessly, alleviating the need for a traditional cable charging method. The company has also investigated solar and movement-based charging, but it is unlikely these technologies will be included in the iWatch.
Apple's iWatch remains in the developmental stages, but the company reportedly has a multitude of employees working on the device. It has hired a number of health and fitness experts in recent months and it appears that the device could include an array of battery-intensive functions and health sensors. It is unknown when the iWatch might be released, but recent reports have suggested that late 2014 could be a target goal, possibly alongside iOS 8 and the next-generation iPhone.
Popular Stories
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices.
Below, we recap key changes rumored for the iPhone 17 Pro models as of April 2025:
Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone 16 Pro models have a titanium frame, and the iPhone ...
If you missed the video showing dummy models of Apple's all-new super thin iPhone 17 Air that's expected later this year, Sonny Dickson this morning shared some further images of the device in close alignment with the other dummy models in the iPhone 17 lineup, indicating just how thin it is likely to be in comparison.
The iPhone 17 Air is expected to be around 5.5mm thick – with a thicker ...
While the so-called "iPhone 17 Air" is not expected to launch until September, there are already plenty of rumors about the ultra-thin device.
Overall, the iPhone 17 Air sounds like a mixed bag. While the device is expected to have an impressively thin and light design, rumors indicate it will have some compromises compared to iPhone 17 Pro models, including only a single rear camera, a...
Despite being more than two years old, Apple's AirPods Pro 2 still dominate the premium wireless‑earbud space, thanks to a potent mix of top‑tier audio, class‑leading noise cancellation, and Apple's habit of delivering major new features through software updates. With AirPods Pro 3 widely expected to arrive in 2025, prospective buyers now face a familiar dilemma: snap up the proven...
Apple plans to release an all-new super thin iPhone this year, debuting it alongside the iPhone 17, iPhone 17 Pro, and iPhone 17 Pro Max. We've seen pictures of dummy models, cases, and renders with the design, but Lewis Hilsenteger of Unbox Therapy today showed off newer dummy models that give us a better idea of just how thin the "iPhone 17 Air" will be.
The iPhone 17 Air is expected to be ...
Starting today, April 24, Apple Stores around the world are giving away a special pin for free to customers who request one, while supplies last.
Photo Credit: Filip Chudzinski
The enamel pin's design is inspired by the Global Close Your Rings Day award in the Activity app, which Apple Watch users can receive by closing all three Activity rings today. The limited-edition pin is the physical...
Apple's $570 million fine from the EU has triggered a sharp rebuke from the White House, which called the fine a form of economic extortion, Reuters reports.
The fine was announced on Wednesday by the European Commission, following a formal investigation into Apple's compliance with the bloc's Digital Markets Act (DMA), a landmark piece of legislation aimed at curbing the market dominance of ...
When an iPad running iPadOS 19 is connected to a Magic Keyboard, a macOS-like menu bar will appear on the screen, according to the leaker Majin Bu.
This change would further blur the lines between the iPad and the Mac. Bloomberg's Mark Gurman previously claimed that iPadOS 19 will be "more like macOS," with unspecified improvements to productivity, multitasking, and app window management,...